[3/9] drm/nouveau/kms: add support for new TTM fault callback
diff mbox

Message ID 1266623158-2404-4-git-send-email-jglisse@redhat.com
State New, archived
Headers show

Commit Message

Jerome Glisse Feb. 19, 2010, 11:45 p.m. UTC
None

Patch
diff mbox

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index db0ed4c..0c62139 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -757,6 +757,47 @@  nouveau_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
 	return 0;
 }
 
+static int
+nouveau_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, struct ttm_bus_placement *pl)
+{
+	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
+	struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
+	struct drm_device *dev = dev_priv->dev;
+
+	pl->offset = mem->mm_node->start << PAGE_SHIFT;
+	pl->size = mem->num_pages << PAGE_SHIFT;
+	pl->base = 0;
+	pl->is_iomem = false;
+	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
+		return -EINVAL;
+	switch (mem->mem_type) {
+	case TTM_PL_SYSTEM:
+		/* System memory */
+		return 0;
+	case TTM_PL_TT:
+#if __OS_HAS_AGP
+		if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) {
+			pl->base = dev_priv->gart_info.aper_base;
+			pl->is_iomem = true;
+		}
+#endif
+		return 0;
+	case TTM_PL_VRAM:
+		pl->base = drm_get_resource_start(dev, 1);
+		pl->is_iomem = true;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int
+nouveau_ttm_fault(struct ttm_buffer_object *bo, struct ttm_bus_placement *pl)
+{
+	return nouveau_ttm_io_mem_reserve(bo->bdev, &bo->mem, pl);
+}
+
 struct ttm_bo_driver nouveau_bo_driver = {
 	.create_ttm_backend_entry = nouveau_bo_create_ttm_backend_entry,
 	.invalidate_caches = nouveau_bo_invalidate_caches,
@@ -769,5 +810,8 @@  struct ttm_bo_driver nouveau_bo_driver = {
 	.sync_obj_flush = nouveau_fence_flush,
 	.sync_obj_unref = nouveau_fence_unref,
 	.sync_obj_ref = nouveau_fence_ref,
+	.fault_reserve = &nouveau_ttm_fault,
+	.io_mem_reserve = &nouveau_ttm_io_mem_reserve,
+	.io_mem_free = NULL,
 };